Humbug; tripe (8)
I believe the answer is:
nonsense
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">humbug</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">tripe</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for nonsense that I've seen before include "Boloney, tosh" , "Bunk" , "Rubbish, drivel" , "Piffle and poppycock" , "Rubbish, foolish talk" .)